Measurements of rod climbing in A1 give rise to an apparent linear relation between the height rise h and the angular velocity Ω of the rod. We use a White-Metzner model to fit the data and we find that the height rise on the rod deviates from the quadratic dependence on the angular velocity when the viscosity or relaxation time vary with shear rate. When both the relaxation time and the viscos...

Throughout this paper, R will denote a commutative ring with identity and M is a unitary R- module and Z will denote the ring of integers. We introduce the graph Ω(M) of module M with the set of vertices contain all nontrivial non-essential submodules of M. We investigate the interplay between graph-theoretic properties of Ω(M) and algebraic properties of M. Also, we assign the values of natura...

Rabi oscillations in the V(15) single molecule magnet embedded in the surfactant (CH(3))(2)[CH(3)(CH(2))(16)CH(2)](2)N(+) have been studied at different microwave powers. An intense damping peak is observed when the Rabi frequency Ω(R) falls in the vicinity of the Larmor frequency of protons ω(N). The experiments are interpreted by a model showing that the damping (or Rabi) time τ(R) is directl...

Recently the investigation of the extremely short (subpicosecond) X-ray pulses interaction with crystals takes interest because of the development of linac-driven X-ray Free Electron Laser, operating in the SASE mode and X-ray Volume Free Electron Laser [1, 2]. According to the analysis [3] short X-ray pulse passing through a crystal is accompanied by the significant time delay of radiation. Th...

Abstract The global superrotation index S compares the integrated axial angular momentum of atmosphere to that a state solid-body corotation with underlying planet. is similar zonal Rossby number, which suggests it may be useful indicator circulation regime occupied by planetary atmosphere. We investigate utility for characterizing regimes atmospheric running idealized Earthlike general model e...

We connect the classical free damping cases by means of Ros-ner's construction in supersymmetric quantum mechanics. Starting with the critical damping, one can obtain in the underdamping case a chirping of instantaneous physical frequency ω 2 (t) ∝ ω 2 u sech 2 (ω u t), whereas in the overdamped case the " chirping " is of the (unphysical) type ω 2 (t) ∝ ω 2 o sec 2 (ω o t), where ω u and ω o a...

The parametric excitation of pairs of electron surface waves (ESW) in the interaction of an ultrashort, intense laser pulse with an overdense plasma is discussed using an analytical model. The plasma has a simple step-like density profile. The ESWs can be excited either by the electric or by the magnetic part of the Lorentz force exerted by the laser and, correspondingly, have frequencies aroun...

Acute kidney injury (AKI) is a common clinical syndrome directly related to patient short-term and long-term morbidity and mortality. Over the last decade, the occurrence rate of AKI has been increasing, and there has also been a growing epidemic of chronic kidney diseases (CKD) and end-stage kidney disease (ESRD) linked to severe and repeated episodes of AKIs. The detection and management of A...

In recent experiments [1,2] we have shown that the change in tunnel current, ∆I(V), through a GaAs/AlAs SL produced by a non-equilibrium acoustic phonon pulse has a maximum at a bias voltage V which varies linearly with the characteristic temperature of the phonon distribution. The form of ∆I(V) is in reasonable agreement with calculations by Glavin et al. [3]. While the experiments clearly sho...

where N = g θ̄ dθ̄ dz was the Brunt-Vaisalla (BV) frequency and θ̄ = θ̄(z) was the potential temperature of the environment. For a stable environment (N > 0) we assumed a temporally varying solution of the form z′(t) = ẑe−iωt, where for period P , ω ≡ 2π P . Substitution of the assumed solution into (1) yielded ω = ±N , which means the parcel oscillation period is equal to the BV period of the envi...